Controlling mechanism for electricity-meters.



E. EVANS. GONTROLLING MECHANISM FOR ELECTRICITY METERS.

Patented Sept.21,1909.

APPLICATION FILED JUNE 3, 1908.

FIG.1.

FIGnZ.

W/TA/EFFEF. WmAMMW 5 f/ r VF. r N A N r M5 One of the levers,

UNITED STATES PATEN ()FFIGE...

EVAN EVANS, OF BERLIN, GERMANY, ASSIGNOR T0 BERGMANN ELEKTRICITATS WERKEAKTIENGESELLSCI-IAFT, 0F BERLIN, GERMANY, A CORPORATION OF GER- MANY.

coNTnoLLINe MECHANISM FOR. ELECTRICITY-METERS.

Patented Sept. 21, 1909. Application filed June 3, 1908. Serial-N0.486,418.

934,902. 7 Specification of Letters Patent.

pointer or hand mn respectively, which To all whom it may concern:

maybe arranged to indlcate on an hour dial.

Be it known that I, EVAN EVANS, a'subject of the Emperor of Germany, anda resident of Berlin, Germany, have invented certain new and usefulImprovements in Controlling Mechanism for Electricity-Meters, of whichthe following is a specification.

My invention relates to electricity meters and particularly to such inwhich provision is made for changing the rate charged for theconsumption of electricity, at predetermined times of the day or night.

The object of my present invention is to provide a'simple device whichwill allow the change in rate to be effected at any desired moment, thedevice being adjustable for this purpose and a further object of myinvention is to effect the change suddenly, so'as to secure a positiveoperation.

My invention will now be described in detail and its novel featurespointed out in the appended claims.

Reference is to electricity meter-of any suitable character in such away as to change the rate of indication at predetermined times. This maybe accomplished in different manners. In Figs. 1, 2 and 3 I have pivotedto the free endof the lever e an elbow lever, one arm of which 2', isguided at its end in a longitudinal slot of the lever 03; the other armh of said elbow lever is connected with a suit-able shifting device ofthe electricity meter. The lever z'h is therefore a shifting lever.

The operation is as follows if the cam disks Z)0 are so set that theirend surfaces will form the angle a with each other. At first, in theposition shown in Fig. l, the projections de of both levers will rest onthe larger port-ions of both cam disks, which portions have the sameradius, so thatthe levers will standin the same position. The shiftinglever is therefore in such a position that its arm i extends in the samedirection as the levers de, and the meter indicates at a predeterminedrate. If now, after the shaft a has rotated for a certain time in the behad to the accompanying drawings, in which v Figure 1 is a sideelevation of the main parts of my invention in one position; F igs, 2and 3 are similar views thereof in'difl'erent positions; Fig. 4 is afront elevation of the adjusting device; Fig. 5 is an axial sectionthereof; and Fig. 6 is a partial side elevation of another construction.

a indicates a shaft which is rotated constantly for instance by means ofa clockwork and may be so constructed as to perform one revolution in 24hours. To this shaft are secured, so as to rotate therewith, yetadjustable circumferentially two cam disks 6 and 0 respectively, preerably arranged side by side. These disks may be simply mounted on theshaft a tightly enough to cause them to follow its rotation under normalcircumstances, yet not tightly enough to prevent their being adjustedwhen desired. The cam disk 6 is engaged by a projection d. upon a lever61 and the cam disk 0 is similarly engaged by a projection e of anotherlever 6. These two levers may be fulcrumed on the same axis f, as in F is. l, 2, and 3, or they may be fulcrumed at different points, asindicated at kl in Fig. 6.

d, is provided with a lateral projection g formmg a stop for the otherleverfe, so that the latter cannot take a lower position than the, leverd. Each of the disks Z)C is rigidly connected with a jection 03 reachesthe shoulder of the cam as shown in Fig. 2 the lever d will drop whilethe lever'e still remains .in its raised position. This will cause theshifting lever i7a. to swing about its fulcrum, thus changing the rateat which the electricity meter indicates. This condition will continuefor a time corresponding to that which thevshaft a takes to rotatethrough the angle a. After such la se of time the lever 6 will in turndrop of? the shoulder of its cam disk 0, so that the two levers will bein the lower position side by side, as shown in Fig. 3, thus swingingthe'shifting lever z'h to substantially its initial position. Thiscondition will continue for a time correspondin to the rotation of theshaft athrough an ang e of 360-a. In explanation I would say that it iscustomary in some places to charge a different rate per unit ofelectricity consumed at different hours of the day and my inventionapplies to the wants of such cases.

The advantages of my present invention reside, first, in the fact thatthe camdisks b-c may be set at any desired point, or in other words thatthe angle a may be addirection indicated by the arrow, the projusted toany size desired. The device is The levers de are arranged to govern anthe combination of a rotary member, two.

the other.

very simple and eflicient in operation. The change of rate is efiectedsuddenly corresponding to the dropping 011' of one or the 'other'leverat the shoulder of its cam disk,

so that the operation will take place at the exact moment desired.

which the rate shall be changed, but further the exact length of timeduring which such rate shall govern. v

I claim as my invention:

1. In a device of the class'described, the combination of a rotaryshaft, two cam disks mounted to rotate therewith yet adjustablecircumferentially one relatively to the other, two levers controlledindividually by said cam disks, and a shifting lever carried by one ofsaid'levers and operatively connected with the other.-

2. In a device of the class described, the

combination of a rotary member, two cams mounted to rotate therewith yetadjustable circumferentially one relatively to the other, two leverscontrolled by said cams individually, and shifting mechanism carried byone of said 3. In a device of the character described,

cams mounted to rotate therewith, two movable elements controlled bysaid cams, and shifting mechanism carried by one of said elements andmechanically connected with 4:, In a device of the character described,the combination of a rotary member, two

The device allows of adjusting not only the exact moment fromv leversand mechanically connected with the other.

operating members mounted .to turn therewith yet adjustablecircumferentially one relatively to the other, two movable elementscontrolled by said operating members, and shifting mechanism carried byone of said elements and mechanically connected with the other. I

5. In a device ofthe character described, the combination of a rotarymember, two operating members mounted to turn therewith, two movableelements controlled by said operating members, and'shifting mechanismcarried by one of said elements and mechanically connected with theother.

6. In a device of the class described, the combination of a rotarymember, two operating members mounted to turn therewith,

two levers controlled by said operating mem-- EVAN EVAN S.

Witnesses:

HENRY HASPER, -WOLDEMAR HAUr'r.

